Scientific paper ID 1742 : 2019/1

The automotive gasoline injection systems main elements are the electromagnetic fuel injectors. The injectors perform the gasoline injection and its open condition duration determines the fuel quantity per working cycle [1]. The injectors are activated by solenoid and inject the gasoline in the engine manifold at the system pressure [2]. The gasoline injectors are ensuring precise fuel metering according to engine work mode. The injectors are controlled by power stages (drivers) in the electronic control unit (ECU) with the control signals, whose parameters are defined by the engine management system. The injectors synchronizing and speed activating has a special significance and influence the increasing of the power and efficiency and the decreasing the harmful emissions of the automotive engines. The synchronization of the electromagnetic gasoline injectors is connected by one hand of the injection according engine work order and by the other – with equal fuel injection duration injection quantity. Meanwhile the injectors work at such conditions, which imposed constant compensation and adaptation activities by the ECU. This circumstance is connected with ments of speed activating, which is measured by indicators, such as minimal electromagnetic activating force and minimal opening and closing time.

This paper is considered the method of defining the electromagnetic parameters of the automotive electromagnetic gasoline injectors for manifold gasoline injection.